"We specifically had in mind not to pull him in for quite some time, but where the story was heading and where the characters were heading, it made a lot of sense," Manapul told Comic Book Resources.

The identity of the villain will be a mystery, with the upcoming arc seeing Barry Allen attempting to discover the truth.

"To be perfectly honest, this Reverse-Flash is going to be a complete reimagining of him in the same way that we kind of tinkered with what the Speed Force is," said Manapul. "We're going to be explaining what the opposite side of that is. He's the Yin to [Barry's] Yang."

"What we can say is, unlike previous Reverse-Flash iterations, we really take the 'reverse' part of it seriously," added Buccellato. "How about that?"